Introduction (Puzzles of the Black Widowers)
| First published | January 1990 |
|---|---|
| Type | Essay |
| Series | Asimov's Essays: Own Work |
| Date | Publication | Publisher | Type | Page | |
|---|---|---|---|---|---|
| January 1990 |
|
Puzzles of the Black Widowers | Doubleday (UK) | Collection | xi |
| January 1990 |
|
Puzzles of the Black Widowers | Doubleday | Collection | xi |
| April 1991 |
|
Puzzles of the Black Widowers | Bantam Books (UK) | Collection | xi |